Add `with_many_` variants for C++ archetype mono fields & port remaining snippets #16472

Job	Run time
paths-filter	8s
Checks / Check if running codegen would produce any changes	1m 32s
Checks / Rerun lints	36s
Checks / Lint markdown	21s
Checks / Spell Check	9s
Checks / markdown-paths-filter	6s
Checks / Misc formatting	16s
Checks / Check links	23s
Python Checks	0s
Minimum CLI Build / Set Config (linux-x64)	4s
C++ tests / matrix_prep	3s
C++ tests / C++ formatting check	3m 23s
Build rerun_js / Build rerun_js	3m 5s
Rust Checks / Test on ${{ matrix.name }}	0s
Rust Checks / Rust lints (fmt, check, clippy, tests, doc)	9m 43s
Build web viewer / Build web viewer	3m 35s
Deploy Landing Preview / Deploy	1m 1s
C++ tests / C++ build & test - Linux x64, C++17	6m 37s
C++ tests / C++ build & test - Linux x64, C++20	6m 45s
C++ tests / C++ build & test - Windows x64	10m 16s
C++ tests / C++ build & test - Mac aarch64	12m 33s
Minimum CLI Build / Build rerun-cli (ubuntu-latest-16-cores)	5m 45s
Upload Web / Upload web build to google cloud (wasm32 + wasm-bindgen)	17s
Minimum Wheel Build / Set Config (linux-x64)	3s
Minimum Wheel Build / Build Wheels (ubuntu-latest-16-cores)	2m 31s
Minimum Wheel Test / Set Config (linux-x64)	6s
Minimum Wheel Test / Test Wheels (ubuntu-latest-16-cores)	4m 6s
	1h 13m 24s

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